<s>
The	O
VESA	B-Protocol
Digital	I-Protocol
Flat	I-Protocol
Panel	I-Protocol
(	O
DFP	O
)	O
interface	O
standard	O
specifies	O
a	O
video	O
connector	O
and	O
digital	O
TMDS	B-Protocol
signaling	O
for	O
flat-panel	B-General_Concept
displays	I-General_Concept
.	O
</s>
<s>
It	O
features	O
20	O
pins	O
and	O
uses	O
the	O
PanelLink	B-Protocol
protocol	O
;	O
the	O
standard	O
is	O
based	O
on	O
the	O
preceding	O
VESA	B-Protocol
Plug	I-Protocol
and	I-Protocol
Display	I-Protocol
(	O
P&D	O
)	O
standard	O
,	O
ratified	O
in	O
1997	O
.	O
</s>
<s>
Unlike	O
the	O
later	O
,	O
electrically-compatible	O
Digital	B-Protocol
Visual	I-Protocol
Interface	I-Protocol
(	O
DVI	B-Protocol
,	O
1999	O
)	O
,	O
DFP	O
never	O
achieved	O
widespread	O
implementation	O
.	O
</s>
<s>
P&D	O
combined	O
analog	O
and	O
digital	O
video	O
with	O
data	O
over	O
USB	B-Protocol
and	O
FireWire	B-Protocol
to	O
reduce	O
cable	O
clutter	O
,	O
but	O
the	O
feature	O
creep	O
resulted	O
in	O
an	O
unpopular	O
,	O
expensive	O
connector	O
.	O
</s>
<s>
Compaq	O
described	O
DFP	O
as	O
a	O
"	O
transition	O
"	O
step	O
between	O
the	O
analog	B-Protocol
VGA	I-Protocol
connector	O
and	O
P&D	O
:	O
DFP	O
was	O
designed	O
by	O
a	O
consortium	O
including	O
Compaq	O
,	O
Hewlett	O
Packard	O
,	O
and	O
ATI	O
Technologies	O
as	O
a	O
smaller	O
,	O
simpler	O
connector	O
,	O
dropping	O
support	O
for	O
analog	O
video	O
and	O
data	O
in	O
favor	O
of	O
transmitting	O
exclusively	O
digital	O
video	O
signals	O
.	O
</s>
<s>
The	O
connector	O
was	O
used	O
by	O
displays	O
such	O
as	O
the	O
Compaq	B-Device
Presario	I-Device
FP400	O
,	O
FP500	O
,	O
FP700	O
,	O
Fp720	O
,	O
5204	O
,	O
and	O
5280	O
.	O
</s>
<s>
It	O
was	O
offered	O
on	O
graphics	B-Device
cards	I-Device
such	O
as	O
the	O
Xpert	O
LCD	O
,	O
and	O
Rage	O
LT	O
Pro	O
by	O
ATI	O
Technologies	O
,	O
and	O
the	O
Oxygen	O
GVX1	O
by	O
3Dlabs	O
.	O
</s>
<s>
DFP	O
is	O
compatible	O
electrically	O
with	O
P&D	O
(	O
and	O
by	O
extension	O
,	O
DVI	B-Protocol
)	O
;	O
DFP	O
uses	O
the	O
Display	O
Data	O
Channel	O
(	O
DDC	O
)	O
standard	O
level	O
DDC2B	O
for	O
operation	O
and	O
the	O
Extended	B-General_Concept
Display	I-General_Concept
Identification	I-General_Concept
Data	I-General_Concept
(	O
EDID	B-General_Concept
)	O
protocol	O
to	O
identify	O
the	O
display	O
to	O
the	O
host	O
.	O
</s>
<s>
Like	O
the	O
preceding	O
P&D	O
,	O
DFP	O
uses	O
the	O
PanelLink	B-Protocol
TMDS	B-Protocol
protocol	O
developed	O
by	O
Silicon	O
Image	O
for	O
digital	O
video	O
signals	O
.	O
</s>
<s>
The	O
DFP	O
standard	O
specifies	O
a	O
20-pin	O
mini	B-Protocol
D	I-Protocol
ribbon	I-Protocol
connector	O
;	O
however	O
,	O
as	O
the	O
signal	O
protocols	O
are	O
identical	O
,	O
DFP	O
connectors	O
generally	O
are	O
compatible	O
with	O
devices	O
equipped	O
with	O
a	O
DVI	B-Protocol
interface	O
by	O
using	O
a	O
passive	O
adaptor	O
.	O
</s>
<s>
DFP	O
was	O
superseded	O
by	O
DVI	B-Protocol
because	O
DFP	O
,	O
like	O
P&D	O
,	O
is	O
limited	O
to	O
a	O
single-link	O
TMDS	B-Protocol
signal	O
.	O
</s>
<s>
In	O
contrast	O
,	O
DVI	B-Protocol
is	O
capable	O
of	O
higher	O
maximum	O
resolutions	O
because	O
it	O
supports	O
a	O
dual-link	O
TMDS	B-Protocol
signal	O
;	O
in	O
addition	O
,	O
DVI	B-Protocol
also	O
supports	O
analog	O
video	O
,	O
which	O
makes	O
the	O
VGA	B-Protocol
connector	I-Protocol
redundant	O
.	O
</s>
